Fig. 1
From: Spontaneous formation of gold nanostructures in aqueous microdroplets
Kinetically controlled AuNP growth using fused microdroplets. a Schematic of the experiment setup. Microdroplets containing 100 µM HAuCl4 solution were fused with the ones containing 400 µM NaBH4 solution. The crystallization process was kinetically controlled on the microsecond timescale by adjusting the traveling distance of the fused microdroplets. b TEM images of gold nanoparticles at different time points. Scale bar is 20 nm. c Time-course change in the diameter of the gold nanoparticles. d TEM image of a nanoparticle showing multiple crystalline structures. e Portion of nanoparticles with single or multiple crystalline structures synthesized in microdroplets. Error bars represent one standard deviation of three replicates
